Which of the following materials can be used to shield magnetic fields from the inside of a box? (Select all that apply.)
A. A box constructed of sheets of steel.
B. A box constructed of sheets of plastic.
C. A box constructed of sheets of aluminum.

Option (A) is the correct answer.

Explanation:

Magnetic shielding is not provided by aluminium as its permeability is on. On the other hand, plastic is not able to protect magnetic fields passing through it. Therefore, plastic cannot be used to protect magnetic shielding.

Whereas stainless steel is not a magnetic material and therefore, it does not allow magnetic field to pass through it.

Thus, we can conclude that a box constructed of sheets of steel materials can be used to shield magnetic fields from the inside of a box.

we have been given a quadratic function and we need to restrict the domain such that it becomes a one to one function.

we know that vertex of this quadratic function occurs at (5,2).

further, we know that range of this function is .

if we restrict the domain of this function to either or , it will become one to one function.

let us know find its inverse.

upon interchanging x and y, we get:

let us now solve this function for y.

hence, the inverse function would be if we restrict the domain of original function to and the inverse function would be if we restrict the domain to .